CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
AI Score
Confidence
Low
When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain’s cache entry, making it end sooner or later than otherwise intended. This affects curl using applications that enable HSTS and use URLs with the insecure HTTP:// scheme and perform transfers with hosts like x.example.com as well as example.com where the first host is a subdomain of the second host. This flaw also affects the curl command line tool. When triggered, this is a potential minor DoS security problem when trying to use HTTPS when that no longer works or a cleartext transmission of data that was otherwise intended to possibly be protected. This update fixes the issue so subdomains cannot affect the HSTS cache of a parent domain.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Mageia | 9 | noarch | curl | < 7.88.1-4.4 | curl-7.88.1-4.4.mga9 |